Curvilinear schemes and maximum rank of forms

Keywords: Maximum rank, curvilinear rank, curvilinear schemes, cactus rank

Abstract

We define the \emph{curvilinear rank} of a degree $d$ form $P$ in $n+1$ variables as the minimum length  of a curvilinear scheme, contained in the $d$-th Veronese embedding of $\mathbb{P}^n$, whose span contains the projective class of $P$. Then, we give a bound for rank of any homogenous polynomial, in dependance on its curvilinear rank.

Author Biographies

Edoardo Ballico, Dipartimento di Matematica, Università di Trento

Dipartimento di Matematica

Professor

Alessandra Bernardi, Dipartimento di Matematica, Università di Trento

Dipartimento di Matematica

Professor

Published
2017-06-20
Section
Articoli